Question 1

Are random numbers truly random?

Accepted Answer

The tool prioritizes using the browser's cryptographic-grade random source crypto.getRandomValues and eliminates modulo bias through rejection sampling, providing randomness far superior to ordinary Math.random, suitable for scenarios like lotteries and sampling that require fairness.

Question 2

What does 'No Duplicates' mean?

Accepted Answer

When 'No Duplicates' is checked, the generated numbers are all different (similar to drawing lots), commonly used for lotteries, grouping, or random roll calls. In this case, the number to generate cannot exceed the total number of integers in the range; otherwise, it will prompt that it cannot be satisfied.

Question 3

Will the generated random numbers be recorded?

Accepted Answer

No. Random numbers are generated entirely locally in your browser, not uploaded, not saved, and cleared when the page is refreshed, protecting your privacy.

Random Number Generator

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